Granted Patent
Utility
US 4,533,736 · App. 06/626,951
Process for the prevention or reduction of discoloration of sodium pyrithione
Inventors:
Samuel I. Trotz, Douglas A. Farmer, Jr.
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Jul 2, 1984
Inventors
Samuel I. Trotz
Douglas A. Farmer, Jr.
Assignee (at issue)
Olin Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.